html{
    font-size:62.5%; /* 10÷16=62.5% */
}

body{
    font-family:"微软雅黑";
    margin: 0;
    padding:0;
    background: #fbfbfb;
}
ul{
    padding: 0px;
    margin:0px;
}

ul li{
    list-style: none;
}
.icon{
    background: url(../images/down.png) no-repeat 0rem 1.3rem;
    height: 40px;
    width: 19px;
    display: inline-block;
    float: right;
}
.active{
    background: url(../images/down.png) no-repeat -1.6rem 1rem;
    height: 40px;
    width: 20px;
    display: inline-block;
    float: right;
}

.help li:nth-child(odd){
    margin-top: -1px;
    height: 40px;
    width: 92%;
    padding-left: 4%;
    padding-right: 4%;
    line-height: 40px;
    font-size: 14px;
    border-bottom: 1px solid #ececec;
    border-top: 1px solid #ececec;
    background: #FFF;
}

.help li:nth-child(even){
    width: 92%;
    margin: 0 auto;
    font-size: 14px;
    min-height: 20px;
}
.content p{
    text-align: justify;
    line-height: 22px;
    color: #4b4d4e;
    font-size: 13px;
}
.content img{
    width: 100%;
    margin-top: 5px;
}


